2. The digestion may be intracellular or extracellular.
Saprozoic Nutrition :
1. In this mode of nutrition the organism feeds on dead and decaying matter.
2. It is generally extracellular and absorbs diffusible food.
Diphyodont is the condition of having two set of teeth during the life of an organism. For example : humans are diphyodont as they have two set of teeth namely temporary milk or deciduous teeth which are replaced by permanent or adult teeth.